The corner-stone for the Monument, a block of marble weighing "twenty-four thousand five hundred pounds," was quarried and presented to the Society by Mr. Thomas Symington, of Baltimore, Md. On its arrival in the city, the stone was enthusiastically drawn to the site of the Monument by many workmen from the navy yard, and other persons. In planning the ceremonies to occur on the laying of the corner-stone of the Monument, the Society invited ex-President John Quincy Adams to deliver the oration, but the invitation, however, was regretfully declined by Mr. Adams on account of the state of his health. Hon. Daniel Webster being requested to deliver the oration declined because of pressure of business and the shortness of the time allowed in which to prepare one. Hon. Robert C. Winthrop, of Massachusetts, Speaker of the House of Representatives, being then requested consented to deliver the oration. Invitations were sent by the committee of arrangements to Mrs. Alexander Hamilton, Mrs. Dolly P. Madison, Mrs. John Quincy Adams, Martin Van Buren, Millard Fillmore, Lewis Cass, General Sam Houston, Chief Justice Taney, George Washington Parke Custis, and other distinguished persons to attend the ceremonies of the laying of the corner-stone. The replies received indicate the interest of those invited in the erection of the Monument to Washington. For the occasion transportation lines entering the District of Columbia reduced their usual rates of travel. On the 4th of July, 1848, under a bright sky, in the presence of the President and Vice-President of the United States, Senators and Representatives in Congress, Heads of Executive Departments, and other officers of the Government, the Judiciary, Representatives of Foreign Governments, the corporate authorities of Washington, Georgetown, and Alexandria, military commands, associations of many descriptions, delegations from States and Territories and from several Indian tribes, and a great multitude of citizens, the corner-stone was laid. The Rev. Mr. McJilton offered the consecration prayer, and the oration, lofty and eloquent, was delivered by the Hon. Robert C. Winthrop. Mr. Benj. B. French, Grand Master of the Masonic Fraternity of the United States, then delivered a beautiful and appropriate address, after which he descended to the corner-stone and performed the Masonic ceremonies of laying it. The gavel used was that employed by George Washington, as Master Mason, in the Masonic ceremonies in the laying of the corner-stone of the National Capitol. A patriotic song, written by Robert Treat Paine, was sung, after which the benediction was pronounced. The corner-stone was laid at the northeast angle of the foundation. Among the distinguished guests on the stand at the laying of the corner-stone were Mrs. Alexander Hamilton (then ninety-one years old), Mrs. Dolly Paine Madison, George Washington Parke Custis, and others of eminence.